kollbii/crypto-kdf

Cryptography project [AGH UST]. Notebook about Key Derivation Functions. Short lab with simple implementation of KDF.

Key Derivation Function

Cryptography project [AGH UST] Contains notebook about key derivation functions and simple implementation of KDF.

Content

1. Wstęp teoretyczny. Czym jest KDF?
2. Od podstaw do czegoś skomplikowanego.
   1. SHA oraz salt. Funkcje haszujące.
   2. Dobra funkcja KDF? Co powinna zapewniać (Memory-Hardness).
   3. Scrypt omówienie.
   4. Atak kanałem bocznym w scrypt (Side Channel Attack) oraz Resistance to Cache Attacks. https://crypto.stanford.edu/cs359c/17sp/projects/MarkAnderson.pdf
   5. Yescrypt bazujący na scrypt.
3. Ciekawostka Balloon Hashing.

Directory layout

.
├── src
│   ├── salsa20.py
│   └── main.py
├── tests
│   ├── test_implementation.py
│   └── README.md
├── .gitignore
├── kdf.ipynb
├── README.md
└── requirements.txt

Usage

    $> cd /directory/with/this/program
    $> jupyter notebook

Credits and used links for inspirations

1. Funkcje wyprowadzania klucza (KDF) wykorzystujące odwzorowanie logistyczne - Grzegorz Frejek
2. https://qvault.io/cryptography/key-derivation-functions/
3. https://cryptobook.nakov.com/mac-and-key-derivation/hmac-and-key-derivation
4. https://cryptography.io/en/latest/hazmat/primitives/key-derivation-functions/
5. https://en.wikipedia.org/wiki/Block_cipher
6. https://en.wikipedia.org/wiki/Key_stretching
7. https://docs.python.org/3/library/hmac.html
8. https://en.wikipedia.org/wiki/Avalanche_effect
9. https://crypto.stanford.edu/cs359c/17sp/projects/MarkAnderson.pdf
10. https://www.openwall.com/yescrypt/
11. https://www.tarsnap.com/scrypt.html
12. https://datatracker.ietf.org/doc/html/rfc7914
13. https://qvault.io/cryptography/very-basic-intro-to-the-scrypt-hash/
14. https://courses.csail.mit.edu/6.857/2016/files/salsa20.py
15. https://github.com/Daeinar/salsa20
16. https://en.wikipedia.org/wiki/Balloon_hashing
17. http://www.tarsnap.com/scrypt/scrypt.pdf
18. https://eprint.iacr.org/2016/027.pdf

Annotations

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